Development of an Experimental Dynamo: Self-Generating Magnetic Fields from a Liquid Metal

实验发电机的开发：液态金属自生磁场

• 批准号: 9615789
• 负责人: Daniel Lathrop
• 金额: $ 3.2万
• 依托单位: Emory University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9615789&HistoricalAwards=false
• 关键词: Development; Experimental; Dynamo; Self; Generating

9615789 Lathrop This grant provides $83,279 as partial support of the costs of developing an experimental dynamo via testing of a prototype apparatus which thermally forces convection of liquid Sodium in an annulus in an attempt to generate a magnetic field. In order to achieve large enough fluid velocities in this apparatus, the titanium rotor which has been designed to handle large stresses will need to be rotated at 25,000 rpm. Such high rotation rates are necessary to overcome the scaling problems of an experimental apparatus designed to model the Earth's geomagnetic field. The development of an experimental dynamo has been a fundamental unsolved problem in geophysics and an unfulfilled dream of international researchers for the last 40 years. The technical difficulties of creating a laboratory sized system capable of generating a large enough magnetic Reynolds number to simulate the Earth's geodynamo have been daunting. This instrument, which has already been built and used for preliminary tests will shed light on the physics of fluid dynamos and has the potential to produce a magnetic field for the first time in a laboratory experiment. ***

小行星9615789 该赠款提供了83，279美元，作为通过测试原型设备开发实验发电机的部分支持，该原型设备热迫使液体钠在环形空间中对流，试图产生磁场。 为了在该装置中获得足够大的流体速度，设计用于处理大应力的钛转子将需要以25，000rpm旋转。 如此高的旋转速率对于克服设计用于模拟地球地磁场的实验装置的缩放问题是必要的。 实验发电机的发展一直是物理学中未解决的基本问题，也是过去40年来国际研究人员未实现的梦想。 建立一个实验室大小的系统，能够产生足够大的磁雷诺数来模拟地球的地球发电机的技术困难是令人生畏的。 这台已经建成并用于初步测试的仪器将揭示流体发电机的物理学，并有可能在实验室实验中首次产生磁场。 ***